Electronic telephone system



April s, 1958 R. B- TROUSDALE ELECTRONIC TELEPHONE SYSTEM 47 Sheets-Sheet 1 LINE cmcun CPII T l2b 2 R el 51 5 m2 ,NOTEISCONNECTED cm on PARTY LINES ONLY I RRP All DIODE cpn SWITCH RP I sc |=|s.|4

,lzA

Al2 mom: cm SWITCH R; so

,IIB

Bll

CPI! mom-:- SWITCH E BIZ DIODE SWITCH INVENTOR.

ROBERT B.TROUSDALE AGENT April 1958 R. B. TROUSDALE 2,830,122

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet 2 LINKA AH 1|3A l W MULTIPLE TONES OUT POINT FIG. :4

- RP I4A\ F RELEASE RELEASE LINE 2; RP PULSE 4 PULSE As FINDER F6 AMPLIFIER GENERATOR As|-A" FCT FIGJB FIG. I?

' w L 1 MA LG MPX 5c SWITCH CONTROL LB POSITWE UNITS FIG.9 4 POSITIVE TENS RDP ASl-A AL-A FB LINK B ./I3B .i. TONES OUT BIZ MULTIPLE POINT RP 14s I I7B\ Rs RELEASE RELEASE LINE RP PULSE 4 PULSE FINDER I sp-5 AMPLIFIER GENERATOR "Fcr v} M MT v H LB MPX 5P POSITIVE UNITS 1 SWITCH CONTROL POSITIVE TENS l LG E RDP v ASl-B AL-B F8 April 1958 R. B. TROUSDALE 2,830,122

I I ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet 5 ASl-A LINK ALLOTTER CIRCUIT IAL TONE FIG. I2

CON NECTOR FIGS. 33-4I INCL AUXILIARY PULSE AMPLIFIER FIG.9

LB ABP UNITS BUSY LEAD CONVERTER 8 EMERGENCY SERVICE NUM BER FIGS. IO 8 II TENS TONE

TONE

CONNECTOR Bu N TENS NEG. UNITS CHI 2 NECTOR BUSY AMPLIFIER FIG.|8

FINDER BUSY AMPLIFIER FIG.IO

April 8, 1958 Filed March 4, 1955 R. B. TROUS DALE ELECTRONIC TELERHONE SYSTEM 47 Sheets-Sheet 4 DIODE 7 SWITCH ,sc g

IZC

DIODE SWITCH SC r 24 u-u r M-IZ M3 MULTIPLEXER I FROM --1' LINE l C'IRCUITS{TLT Fls'ls l5-Ol 26 r A M M INEGTENS 3: CHANNEL SF PULSE TO LINE 5 NE6.UNITS CIRCUITS gr MATR'X ns-o: a DIODE cpo FIG.I5 SWITCHES l3-Ol RRP RTP A k as I 38 31 as RINGING SUPERIMPOSING RINGING BUSY RINGING 691m DIAL TONE GENERATOR SUPPLY INTERRUPTER GENERATOR FIG.27 FIG.28 FIG.29 FIG.3I

V V W V ausY TONE QIALTQQE RTC RRC FIG.4

April 8,

Filed March 4, 1955 4'7 Sheets-Sheet 5 LINK C A /I3C Cll LINK MULTIPLE 4 ToNEs OUT 02 POINT I4c T RP F I5C- RS RP RELEASE RELEASE As LINE -FA PULSE PULSE FINDER :iE-C

AMPLIFIER GENERATOR I E "III II+VIIIII "PX TCH /|6c E LB POS.UNIT$ Sc SWI j sPI P0$.TEN$

CONTROL 3 LG RDP ASI-C AL-c /25 5 MULTIPLEXER px AMPLFIER RINGING CONTROL 127 1 RC DRIVER RC0 FIG. I4

IINEG. P05. NEG. M TENS TENs UNITS Rsmuns II II x I I I RDP NTI Mn PTI NUI|2|3H PUIIZHGI 7 REGISTER TENs RING uNITs RING SAMRLING 253g AMPLIFIER AMPLIFIER PULSE cIRcuITs cIRcuITs AMPLIFIER 35/ AMPFITLIEFR F1614 FIG.23 FIG.22 -29 33 I I I 3|/II IIM I III SPD I fii 34- 32 30 N gg fi TENS RING UNITS RING jf fg I INPUT PULSE RED clRculT T40 cIRcuIT v GENERATOR I /43 UNIIDTRSIVREING FIGS. 248.30 FIG.23 FIG.22 H62 L FIG.5

April 8, 1958 R. B. TROUSDALE T 2,830,122

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet 6 CONNECTOR P05. TEN

' TRUNK HUNTING 7 EXECUTIVE EXECUTIVE CUT |N CUT IN AMPLIFIER MARKERS H626 MASTER TRUNK OSCILLATOR HUNT'NG AM PL|F IER FIG.26

FIG. 2|

FIG. 6

April 8, 1958 R. B. TROUSDALE 2,830,122

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet 7 April 8, 1958 R. B. TROUSDALE 2,830,122

ELECTRONIC TELEPHONE SYSTEM Filed March 4} 1955 47 Sheets-Sheet 8 AUXILIARY PUI SE AMPLIFIER 20 ABP SWITCH COfiROL ISA CD903 T930 R903 AMPLIFIER 92o LBR FIG.9

A ril s, 1958 RIOO4 Filed March 4, 1955 CDIOO? LBR R. B. TROUSDALE ELECTRONIC TELEPHONE SYSTEM AMPLIFIER 47 Sheets-Sheet 9 BUSY LEAD CONVERTER 4 EMERGENCY SERVICE NUMBER CIRCUIT 2| GENERATIVE EMITTER FOLLOWER April 8, 1958 R. B. TROUSDALE 2,330,122

ELECTRONIC TELEPHONE SYSTEM Filed March'4, 1955 47 Sheets-Sheet 10 BUSY LEAD CONVERTER 6 EMERGENCY SERVICE NUMBER CIRCUIT 2| CDIIOI I [\L IIOI A2 STA V QUARTER couoz I w whit DECK STATION LINE CIRCUIT I uosI STA. EMERGENCY T I Z5 SERVICE R kg I PILOT HOUSE LINE CIRCUIT S M STATION STATION NO. LINE CIRCUIT 222 I3 4 25 M05; SWITCH POSITION u! IPUL z 852mm DECK PTO 3..PILOT HOUSE I TENS A POS.UNIT5 EMERGENCY SERVICE NUMBER RDP SWITCH IIOO.

ABP

comes I fi ARTIFICIAL FB I PUZ BUSY sw|TcHE$ DP F PUI come .PU4

o-PU5 o-Pus ASI-A 4 PM M v BPue POS. UNITS I PU9 M PUO Pus W 7 uun's as, SELECTOR N DP IQ mo -couo1 v can I PTI POS.'I'ENS 62. PTZ PTS 3 JFPTEI I -'PT4 v o PT5 o'PT6 L P1'1 o-P're I -P1's LPTO TENS 2 SELECTOR April 8, 1958 R. B. TROUSDALE 2,830,122

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet l1- LINK ALLOTTER CIRCUIT l9 MANUAL STEP RING STAGE l RING STAGEZ 'RING STAGE 3 TO LINE FINDER ASl-B CDI204 ==CI203 p IZOOA To IZIOB TO |2|oc LINE -B FINDER F'NDER 175 FIG. l2

' April 8, 1958 R. B. TROUSDALE 2,830,122

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet 12 LINE CIRCUIT ll TI34O II T AN|3OI 0* z llbl TO DIODE llb3 SWITCH CIRCUITIIB I342 IIb2 llcl RING I345 c3 T0 DIODE RI302 swITcH v c2 CIRCUITIIC I346 I SLEEVE T1350 Rl3ll M|| RING I PW L TIP I35I Cl305 |3Io I;

RINGING R|NG CONTROL 4 Rl309 OSCILLATOR RINGING I320 CONTROL GATE I332 c|3o2 cpl coI3o3 Rm? Rl3l2 C's-o3 S RRP RTP FIG. l3

April 1958 R. B TROUSDALE 2,830,122

ELECTRONIC TELEPHONE SYS'I EM Filed March 4,1955 47 Sheets-Sheet 13 DIODE LINK SWITCH ClfiCUIT IIA MULTIPLE fOlNT |3A v N in Tl4l0 Cl402 g W3 R|406 OUT L %4 0l =;Cl403 71: 7 co|4o2 NOTE: OUTPUTS OF ALL loo DIODE SWITCH CIRCUITS IN LINK"A" DlODE comes CONNECT TO THESE SWITCH CPH TERMINALS CONTROL CDI404 A SC RP Mll RINGING CONTROL DRIVER 27 comes {5 FIG. l4

April 8, 1958 R. B. TROUSDALE ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheet-Sheet 14 SPI SC CHANNEL PULSE MATRIX 26 NTI T0 CPIZ CPIO LINE {CIRCUIT D l o NEG. TENS CF22 CF20 I D'-O I l I I 1 NTO cPoz cPdo TNUO NEG um'rs M II LR TONES OUT Rp NEG. Pos. uunsfl um'rs April 1958 R. B. TROUSDALE 2,830,122

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet 15 LG NEG.TENS

NEG. UNITS M ULTIPLEXER 24 CDI605 Cleo RIBOZ TONES OUT POS. UNITS NEG. TENS SP RP April 8, 1958 R. B. TROUSDALE 2,830,122

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet 16 NEG.TEN$ NEG.UNITS MULTIPLEXER OUTPUI AMPLIFIER 25 TITIO MPx AMPLIFIER 1700 CDITOI' RELEASE PULSE GENERATOR |5A I A ASTABLE OSCILLATOR As RITOI I720 732 zgcowoz TONES our I PO$.UN|TS RP POS.UNITS POS.TEN5

A ril s, 1958 Filed March 4, 1955 POS.TENS

R. B. TROUSDALE' ELECTRONIC TELEPHONE SYSTEM FIG. l8

MPX

CONNECTOR BUiY AMPLIFIER 22 new CBI

RELEASE PULSE AMPLIFIER I4A 47 Sheets-Sheet l7 nsso AL-A MPX LG Rl802 RP CDIBOI TO N as oun Pos. UNITS P05. TENS\ ASI'A ,CB RDP April s, 1958 Filed March 4, 1955 REGISTER DRIVE PULSE UNITS REGISTER PULSER R. B. TROUSDALE ELECTRONIC TELEPHONE SYSTEM LINE FINDER. I7A

47 Sheets-Sheet l8 U N ITS REGISTER UNITS 0 ZECDIQOB CD|907 POS.UN|TS CDI909 cmsIo posxzus CUT GATE nmoue AMPLIFIER R1903 I900 Rl908 meoz C|9O CUT H- THROUGH cIeos OUTPUT I940 cI905 05 l g 9 R RELEASE DELAY I930 NFG ALLOTTER Rl97 I (9 START I95OA AS ASIA MFG--- FRA-- ASl-A Rs- FCT April 1958 R. B. TROUSDALE 2,830,122

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet 19 TENS LINE FINDER ITA REGISTER PULSER RZOOI TENS 5GISTER c2001 c2002 II TENSI TENS 2 zone 2020 cnzoos co2oo2 N I R2009 I PTI r Pos. TENS PTZ cozoos PTO ' GATE FOLLOWER NFG FCT

FIG. 20

April s, 1958 Filed March 4, 1955 MASTER R. B. TROUSDALE ELECTRONIC TELEPHONE SYSTEM OSCILLAIOR 28 UNITS RING QRIVE 43 RRP 47 Sheets-Sheet 20 RTP CDZIOB 

